#include <stdio.h>
#define add(num1, num2) printf("%d+%d=%d\n", num1, num2, num1 + num2);
#define sub(num1, num2) printf("%d-%d=%d\n", num1, num2, num1 - num2);
#define multi(num1, num2) printf("%dx%d=%d\n", num1, num2, num1 *num2);
#define div(num1, num2) printf("%d/%d=%d\n", num1, num2, num1 / num2);

int main(int argc, char const *argv[])
{
    add(1, 1);
    sub(10, 6);
    multi(2, 5);
    div(9, 3);
    return 0;
}
